Altra have partnered with MATRYX® to design a one-piece woven upper that’s lightweight and protective

6 detachable spike pins deliver optimal grip

Soft handed heather knit allows for superior comfort

It’s adaptable to transition through the seasons and each leg of your race

Mens Asics Sonicblast Nutrition Altra have partnered with MATRYX®Featuring a two layered foam cushioning in the midsole, the SONICBLAST shoe provides a lightweight, bouncy and responsive ride during tempo runs, workouts and races. This boosted trainer includes a more stable heel and more flexible forefoot transition compared to other plated models, making it a more accessible option to many runners. The midsole features a two layered foam with FF BLAST MAX and FF TURBO cushioning to help create a lightweight,